Does it have just the 'loop' strap up front? My Cortech had a similar loop, which I cut in the middle, essentially giving me two front straps. I melted the cut ends to prevent fraying, then ran them back to the buckles, now creating two loops - a right and left.
I looped the straps around those horizontal struts down in the fairing, near the tank. That seems to keep things pretty steady.
I can try to get some pix if you need a visual.
'07 DL650 ABS
'04 Yamaha V-Star 650 Classic Silverado (gone)
'04 Yamaha TTR225
'03 BMW F650GS (wife's)
'92 Honda XR250L
'86 Honda VT500c (gone)